<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>f1走一走</title>
  </head>
  <body>
    <div id="app">
      <ul v-for="item in list">
        <li>{{ item }}</li>
      </ul>
      <button @click="change">走一走</button>
    </div>
    <script src="../vue.js"></script>
    <script>
      const app = new Vue({
        el: "#app",
        data: {
          list: ["帅哥", "男神", "程序员"],
          item: "",
        },
        methods: {
          change() {
            item = this.list[0];
            this.list.shift();
            this.list.push(item);
          },
        },
      });
    </script>
  </body>
</html>
